package fragment;

import android.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import com.example.administrator.projectmoudle_two.R;

import java.io.UnsupportedEncodingException;

/**
 * Created by eyesee on 2017/5/10.
 */

public class GetInitalFragment extends Fragment implements View.OnClickListener {
    static final int GB_SP_DIFF = 160;
    //国际一级汉字不同读音的起始区位码
    static final int[] secPostValueList = {1601, 1637, 1833, 2078, 2274, 2302,
            2433, 2594, 2787, 3106, 3212, 3472, 3635, 3722, 3730, 3858, 4027,
            4086, 4390, 4558, 4684, 4925, 5249, 5600};

    //国际一级汉字不同读音的起始区位码对应的读音
    static final char[] firstLetter = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
            'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'w', 'x',
            'y', 'z'};

    private View mView;
    private EditText mEt;
    private TextView mTv;
    private Button mBtn;
    private String mText;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mView = View.inflate(getActivity(), R.layout.fragment_getinital, null);
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        initView(mView);
        return mView;
    }

    private void initView(View view) {
        mEt = ((EditText) view.findViewById(R.id.et));
        mTv = ((TextView) view.findViewById(R.id.tv));
        mBtn = ((Button) view.findViewById(R.id.btn));

        mBtn.setOnClickListener(this);
        mTv.setText("拼音");
    }

    @Override
    public void onClick(View v) {
        if (v==mBtn){
            mText = mEt.getText().toString();
            String spells = getSpells(mText);
            mTv.setText(spells);
        }
    }

    private String getSpells(String text) {
        StringBuffer buffer = new StringBuffer();
        for (int i = 0; i < text.length(); i++) {
            char ch = text.charAt(i);
            if ((ch>>7)==0){        //判断是否为汉字,右移7为0表示不是汉字
                //不为汉字
            }else {
                //是汉字
                Character spell = getFirstLetter(ch);
                buffer.append(String.valueOf(spell));
            }
        }
        return buffer.toString();
    }

    private Character getFirstLetter(char ch) {
        byte[] unicode = null;
        try {
            unicode = String.valueOf(ch).getBytes("GBK");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return null;
        }

        if (unicode[0]<128 && unicode[0]>0){
            //非汉字
            return null;
        }else {
            return convert(unicode);
        }
    }


    /**
     * 获取一个汉字的拼音首字母。 GB码两个字节分别减去160，转换成10进制码组合就可以得到区位码
     * 例如汉字“你”的GB码是0xC4/0xE3，分别减去0xA0（160）就是0x24/0x43
     * 0x24转成10进制就是36，0x43是67，那么它的区位码就是3667，在对照表中读音为‘n’
     */
    private char convert(byte[] bytes) {
        char result = '一';
        int secPostValue = 0;
        int i;
        for (i = 0; i < bytes.length; i++) {
            bytes[i] -= GB_SP_DIFF;
        }
        secPostValue = bytes[0] * 100 + bytes[1];
        for (i = 0; i < 23; i++) {
            if (secPostValue >= secPostValueList[i] && secPostValue <secPostValueList[i+1]){
                result = firstLetter[i];
                break;
            }
        }
        return result;
    }

}
